13855951 has 2 divisors, whose sum is σ = 13855952. Its totient is φ = 13855950.

The previous prime is 13855943. The next prime is 13855979. The reversal of 13855951 is 15955831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13855951 - 2³ = 13855943 is a prime.

It is a super-2 number, since 2×13855951² = 383974756228802, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13855951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13855931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6927975 + 6927976.

It is an arithmetic number, because the mean of its divisors is an integer number (6927976).

Almost surely, 2^13855951 is an apocalyptic number.

13855951 is a deficient number, since it is larger than the sum of its proper divisors (1).

13855951 is an equidigital number, since it uses as much as digits as its factorization.

13855951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27000, while the sum is 37.

The square root of 13855951 is about 3722.3582578790. The cubic root of 13855951 is about 240.1847593505.

The spelling of 13855951 in words is "thirteen million, eight hundred fifty-five thousand, nine hundred fifty-one".